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第２章問２０
Author:
kan1tksn2015
GeoGebra
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平均変化率
サイクロイド
standingwave-plus
正１７角形 作図 regular 17-gon 2
円の伸開線
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三角形の内心と内接円
ピタゴラスの定理（三平方の定理）
Limason of Pascal
扇形の回転体２
楕円と折り紙
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Curve Sketching
Equilateral Triangles
Scalene Triangles
Tree Diagrams
Angles